Definición de one-trick pony en inglés:

sustantivo

I've always said that if you can't go 2 for 10 from the field and still help your team win, you are not a basketball player; you are strictly a one-trick pony.

This little quirk aside, Hawksley appears to be an entertaining hack among thriller writers, something of a one-trick pony who's served up the Doomsday scenario three different ways in his last three books.

They've been branded a one-trick pony as a result, but the trick has worked well for them, garnering a deal and possible television show with Disney and an invitation to play at the forthcoming Nobel peace prize ceremony in Oslo.